DC Bofinken

The article supplies the strongest direct quantity set in this group: 8,500 m³ excavated rock, 1,300 m² / 13,993 ft² of two-storey inner floor area, a 140 m by 3.5 m through-blast tunnel, about 20 m rock cover and 150-person design capacity. It describes a freestanding fire-safe concrete inner building, drilled well and water basin, protected operating ventilation/dehumidified peacetime recirculation, automatic standby power, and an approximately SEK 5.5m total cost, of which SEK 5m was building and the balance fit-out/radio/telecom. Construction ran 1965-72.

published: 8,500 m³ excavated rock; 1,300 m² / 13,993 ft² inner floor area; two storeys; 140 m by 3.5 m through-blast tunnel; approximately 20 m cover; 150-person capacity | not_published: tunnel/cavern height and cross-section beyond width; support surface/class; inner-building concrete/rebar quantities; portal/door/shaft schedule; water inflow and drainage

approximately SEK 5.5m reported total around 1972, comprising approximately SEK 5m building cost and SEK 0.5m furnishings/radio/wire/telecom; described as an approximate total, not a cited audited final account

protected/normal ventilation modes and dehumidification; drilled well, pump and water basin; automatic standby generator (source unit is written as approximately 100 kV and needs clarification); communications fit-out; support and accommodation spaces

published rock volume and support; inner concrete/rebar; long through tunnel and two interfaces; water/drainage/dehumidification; CBRN/protected ventilation; standby power and communications; commissioning

One physical facility; the current dossier merges this article with a second Bofinken source.

Retain direct 8,500 m³ as the geometry anchor; separate excavation volume from support surface/support class; replace area-derived inner concrete and 35 kg/m³ rebar with drawings or stronger structural ranges; add water/drainage/dehumidification and commissioning; supplier-budget generator, CBRN, doors/valves, penetrations and communications; label the historic cost as approximate reported total

as-built inner-building structure quantities; rock-support area/class; portal/door and shaft schedule; hydro/drainage condition; generator rating clarification; current protection brief and supplier budgets; primary final account

best-supported dossier is still labelled only Low confidence without explaining what would reach Medium; reinforcement proxy appears too light for a hardened inner building; water/drainage and commissioning are missing; approximate historic total may read as actual